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Mass Concentration and Ion Composition of Size-segregated Particulate Matter during the Non-Asian Dust Storm of Spring 2007 in Iksan
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 Title & Authors
Mass Concentration and Ion Composition of Size-segregated Particulate Matter during the Non-Asian Dust Storm of Spring 2007 in Iksan
Kang, Gong-Unn; Kim, Nam-Song; Lee, Hyun-Ju;
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In order to further determine the mass concentration and ion composition of size-segregated particulate matter (PM) during the non-Asian dust storm of spring, (fine particle), (coarse particle), and (PM with an aerodynamic diameter larger than ) were collected using a MCI (multi-nozzle cascade impactor) sampler of a three-stage filter pack in the spring season of 2007 in the Iksan area. During the sampling period from 5 April to 21 April, a total of 34 samples for size-segregated PM were collected, and then measured for PM mass concentrations by gravimetric measurements and for water-soluble inorganic ion species by using ion chromatography. Average mass concentrations of , , were , and , respectively. On average, accounted for 74% of . Compared with the literature from other areas in Korea, the measured concentration of were relatively high. Water-soluble inorganic ion fractions in , , and were found to be 47.8%, 28.5%, and 14.7%, respectively. Among the water-soluble inorganic ion species, , and were the main components in , while dominantly existed in both and . Non-seasalt (nss- and were found to mainly exist as the neutralized chemical components of and in fine particles.
;;;size-segregated particulate matter;MCI sampler;water-soluble inorganic ion species;
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